We open at 10 am everyday. In the summer, we close the gates at 5 and in the winter we close them at 4. Visitors have one hour after the gates close to finish their visit and leave the grounds.
It depends on the time of the year and if it is a holiday or not. Additional Information: The Bronx Zoo is operating on the Spring/Summer Hours now, and will until October 31, 2010. They are open...